75007217940 has 48 divisors (see below), whose sum is σ = 215142661440. Its totient is φ = 19514072320.

The previous prime is 75007217933. The next prime is 75007217941. The reversal of 75007217940 is 4971270057.

It is a junction number, because it is equal to n+sod(n) for n = 75007217892 and 75007217901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75007217941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15242910 + ... + 15247829.

It is an arithmetic number, because the mean of its divisors is an integer number (4482138780).

Almost surely, 2^75007217940 is an apocalyptic number.

It is an amenable number.

75007217940 is an abundant number, since it is smaller than the sum of its proper divisors (140135443500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75007217940 is a wasteful number, since it uses less digits than its factorization.

75007217940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30490792 (or 30490790 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 42.

Adding to 75007217940 its reverse (4971270057), we get a palindrome (79978487997).

The spelling of 75007217940 in words is "seventy-five billion, seven million, two hundred seventeen thousand, nine hundred forty".